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Full Discussion: restore mirrored root
Operating Systems Solaris restore mirrored root Post 302107596 by bonovox on Monday 19th of February 2007 11:29:15 AM
Old 02-19-2007
restore mirrored root

Hi,
I have an ultra60 SUN Server with Solaris 10 4/04 S.O. installed on.
I mirrored root disk and now I try to restore this.
I simulate that I have lose the root FS, not for a hardware faillure but for a software problem and I can't use "meta"commands for using a good submirror.
I must restore all the root FS.
Before I saved root with ufsdump.
Then I booted from cdrom in single user mode.
I restored root from dat
I modified /etc/vfstab changing info about root FS.
I would also modify /etc/system for about entries of Solaris volume manager added for root metadevice, and I found that entries was disappeared. I verified /etc/system file saved on dat and was the original but after ufsrestore it seems that it changes.
However I modified only /etc/vfstab and I tried to boot system.
The system, after memory test crashes continuously.
I remember that I did this work whit Solaris 9 and also 2.6 and it worked fine.
Anyone could help me?
There is another procedure to follow for restoring a mirrored root in a Solaris 10 Operating enviroment?

Thanks

Bonovox
 

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metaroot(1M)															      metaroot(1M)

NAME
metaroot - setup system files for root (/) metadevice SYNOPSIS
/usr/sbin/metaroot -h /usr/sbin/metaroot [-n] [-k system-name] [-v vfstab-name] [-c mddb.cf-name] [-m md.conf-name] [-R root-path] device The metaroot command edits the /etc/vfstab and /etc/system files so that the system may be booted with the root file system (/) on an appropriate metadevice. The only metadevices that support the root file system are a stripe with only a single slice or a mirror on a sin- gle-slice stripe. If necessary, the metaroot command can reset a system that has been configured to boot the root file system (/) on a metadevice so that it uses a physical slice. Root privileges are required for all of the following options except -h. The following options are supported: -c mddb.cf-name Use mddb.cf-name instead of the default /etc/lvm/mddb.cf file as a source of metadevice database locations. -h Display a usage message. -k system-name Edit a user-supplied system-name instead of the default /etc/system system configuration information file. -m md.conf-name Edit the configuration file specified by md.conf-name rather than the default, /kernel/drv/md.conf. -n Print what would be done without actually doing it. -R root-path When metaroot modifies system files, it accesses them in their relative location under root-path. The -R option cannot be used in combination with the -c, -k,-m, or -v options. Note - The root file system of any non-global zones must not be referenced with the -R option. Doing so might damage the global zone's file system, might compromise the security of the global zone, and might damage the non-global zone's file system. See zones(5). -v vfstab-name Edit vfstab-name instead of the default /etc/vfstab table of file system defaults. The following operands are supported: device Specifies either the metadevice or the conventional disk device (slice) used for the root file system (/). Example 1: Specifying Root File System on Metadevice The following command edits /etc/system and /etc/vfstab to specify that the root file system is now on metadevice d0. # metaroot d0 Example 2: Specifying Root File System on SCSI Disk The following command edits /etc/system and /etc/vfstab to specify that the root file system is now on the SCSI disk device /dev/dsk/c0t3d0s0. # metaroot /dev/dsk/c0t3d0s0 /etc/system System configuration information file. See system(4). /etc/vfstab File system defaults. /etc/lvm/mddb.cf Metadevice state database locations. /kernel/drv/md.conf Configuration file for the metadevice driver, md. The following exit values are returned: 0 Successful completion. >0 An error occurred. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWmdu | +-----------------------------+-----------------------------+ mdmonitord(1M), metaclear(1M), metadb(1M), metadetach(1M), metahs(1M), metainit(1M), metaoffline(1M), metaonline(1M), metaparam(1M), metarecover(1M), metarename(1M), metareplace(1M), metaset(1M), metassist(1M), metastat(1M), metasync(1M), metattach(1M), md.tab(4), md.cf(4), mddb.cf(4), md.tab(4), attributes(5), md(7D) 6 Apr 2005 metaroot(1M)
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